EP0485292B1 - Optische Vorrichtung zum Messen des Rollwinkels eines Projektils - Google Patents

Optische Vorrichtung zum Messen des Rollwinkels eines Projektils Download PDF

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Publication number
EP0485292B1
EP0485292B1 EP91402994A EP91402994A EP0485292B1 EP 0485292 B1 EP0485292 B1 EP 0485292B1 EP 91402994 A EP91402994 A EP 91402994A EP 91402994 A EP91402994 A EP 91402994A EP 0485292 B1 EP0485292 B1 EP 0485292B1
Authority
EP
European Patent Office
Prior art keywords
projectile
light
roll
roll angle
flux
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91402994A
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English (en)
French (fr)
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EP0485292A1 (de
Inventor
Patrice Jano
Thibaut De Saxce
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Thales SA
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Thomson CSF SA
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/344—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using polarisation
    • G01D5/345—Polarising encoders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G7/00—Direction control systems for self-propelled missiles
    • F41G7/20—Direction control systems for self-propelled missiles based on continuous observation of target position
    • F41G7/30—Command link guidance systems
    • F41G7/301—Details
    • F41G7/305—Details for spin-stabilized missiles

Definitions

  • the piloting of a guided munition launched by a conventional or electromagnetic gun and animated by a rotational movement around its axis can be done using lateral impellers with gas generator, whose operation is controlled when they are oriented in the desired direction. This requires knowing at all times the roll angle of the projectile.
  • the first optical receiver 61 which is sensitive to the intensity of the light flux received via the polarizer 62 delivers an output signal S1 whose amplitude represented in FIG. 6 varies according to a sinusoid squared, of frequency twice the frequency of rotation of the projectile along the roll axis, affected by a large parasitic modulation due to fluctuations in the light intensity of the beam reflected by the projectile due to natural turbulences and those caused by the wake of the projectile.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Claims (2)

  1. Optische Vorrichtung zur Messung des Rollwinkels eines Geschosses (3), das von in einer Abschußstation (1) liegenden Abschußmitteln (2) abgeschossen wird, wobei die Vorrichtung am hinteren Ende des Geschosses (3) einen mit einem Polarisator (16) ausgerüsteten Rückstrahler (15) sowie in der Abschußstation eine Lichtquelle (5), die seitlich bezüglich der Abschußachse des Geschosses (3) versetzt ist und deren Lichtstrahl die Rückseite des Geschosses (3) beleuchtet, und einen Lichtflußanalysator (6) aufweist, der aus der Polarisationsrichtung des von der Rückseite des Geschosses (3) reflektierten Lichtflusses den Rollwinkel des Geschosses mit einer Zweideutigkeit hinsichtlich π ableitet, dadurch gekennzeichnet, daß die Vorrichtung weiter zur Behebung dieser Zweideutigkeit hinsichtlich π bei der Messung des Rollwinkels einen reflektierenden Zweiflächler (20) aufweist, der an der Flanke des Geschosses (31) angebracht ist und nach hinten weist, wobei die Kante des Zweiflächlers zur Rolldrehachse des Geschosses (3) senkrecht verläuft und wobei der Zweiflächler das Licht der Quelle (5) zum Lichtflußanalysator (6) einmal je Umdrehung des Geschosses (3) reflektiert, wenn nämlich die Lichtquelle (5) durch den Körper des Geschosses (3) nicht verdeckt ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Lichtflußanalysator (6) aufweist:
    - einen ersten optischen Empfänger (61), der auf die Stärke des Lichtflusses anspricht und über einen Polarisator (62) den von der Rückseite des Geschosses (3) reflektierten Lichtfluß empfängt,
    - eine zweiten optischen Empfänger (63), der auf die Stärke des Lichtflusses anspricht und unmittelbar den von der Rückseite des Geschosses (3) reflektierten Lichtfluß empfängt,
    - eine Schaltung (64) zur Kompensation der Fluktuationen des Lichtflusses aufgrund der Turbulenzen, die das vom ersten optischen Empfänger gelieferte Signale (61) durch das vom zweiten optischen Empfänger (63) gelieferte Signal teilt,
    - und eine Schaltung (65) zur Auswertung des Rollwinkels, die das von der Kompensationsschaltung (64) gelieferte Signal weiterverarbeitet.
EP91402994A 1990-11-09 1991-11-07 Optische Vorrichtung zum Messen des Rollwinkels eines Projektils Expired - Lifetime EP0485292B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9013939 1990-11-09
FR9013939A FR2669108B1 (fr) 1990-11-09 1990-11-09 Dispositif optique de mesure de l'angle de roulis d'un projectile.

Publications (2)

Publication Number Publication Date
EP0485292A1 EP0485292A1 (de) 1992-05-13
EP0485292B1 true EP0485292B1 (de) 1994-06-08

Family

ID=9402036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402994A Expired - Lifetime EP0485292B1 (de) 1990-11-09 1991-11-07 Optische Vorrichtung zum Messen des Rollwinkels eines Projektils

Country Status (4)

Country Link
US (1) US5259567A (de)
EP (1) EP0485292B1 (de)
DE (1) DE69102397T2 (de)
FR (1) FR2669108B1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE468726B (sv) * 1991-07-02 1993-03-08 Bofors Ab Anordning foer rollvinkelbestaemning
FR2706205B1 (fr) * 1993-06-08 1995-07-21 Thomson Csf Dispositif optique de mesure sans ambiguité de l'angle de roulis d'un projectile.
DE4416210C2 (de) * 1994-05-07 1997-05-22 Rheinmetall Ind Ag Verfahren und Vorrichtung zur Ermittlung der Rollwinkellage eines rotierenden Flugkörpers
FR2728340B1 (fr) * 1994-12-20 1997-01-24 Thomson Csf Dispositif de mesure de position angulaire d'une partie mobile, notamment d'une antenne, par rapport a une autre partie mecanique
FR2751797B1 (fr) * 1996-07-23 1999-02-05 Thomson Csf Dispositif de mesure d'alignement d'une chaine d'amplification laser
FR2759208B1 (fr) * 1997-01-31 1999-05-07 Thomson Csf Dispositif de controle du pointage et de la focalisation des chaines laser sur une cible
US6450442B1 (en) * 1997-09-30 2002-09-17 Raytheon Company Impulse radar guidance apparatus and method for use with guided projectiles
DE10147837A1 (de) * 2001-09-27 2003-04-24 Rheinmetall Landsysteme Gmbh Wurfsystem für einen Gefechtskopf mit einer Richtvorrichtung zur Neutralisierung von Minen
US7589663B1 (en) * 2006-01-20 2009-09-15 The United States Of America As Represented By The Secretary Of The Army System and method for the measurement of the unambiguous roll angle of a projectile
US7333044B1 (en) * 2006-09-25 2008-02-19 The United States Of America As Represented By The Secretary Of The Army Rocket-powered sensor target assembly
US8324542B2 (en) * 2009-03-17 2012-12-04 Bae Systems Information And Electronic Systems Integration Inc. Command method for spinning projectiles
US8093539B2 (en) * 2009-05-21 2012-01-10 Omnitek Partners Llc Integrated reference source and target designator system for high-precision guidance of guided munitions
US9341697B2 (en) * 2012-06-25 2016-05-17 Teledyne Scientific & Imaging, Llc Moving platform orientation tracking system
WO2014186049A2 (en) * 2013-03-21 2014-11-20 Kms Consulting, Llc Apparatus for correcting ballistic errors using laser induced fluorescent (strobe) tracers
US9631954B2 (en) * 2014-02-04 2017-04-25 Teledyne Scientific & Imaging, Llc Moving platform roll sensor system
CN106643570B (zh) * 2016-12-30 2020-02-18 西安奇维科技有限公司 一种弹体滚转角的测量装置和测量方法
US11578956B1 (en) 2017-11-01 2023-02-14 Northrop Grumman Systems Corporation Detecting body spin on a projectile
US10962990B2 (en) * 2019-08-07 2021-03-30 Bae Systems Information And Electronic Systems Integration Inc. Attitude determination by pulse beacon and low cost inertial measuring unit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757632A (en) * 1970-09-28 1973-09-11 Gen Robotics Inc Ammunition tracer system
US3995792A (en) * 1974-10-15 1976-12-07 The United States Of America As Represented By The Secretary Of The Army Laser missile guidance system
US4003659A (en) * 1974-11-15 1977-01-18 The United States Of America As Represented By The Secretary Of The Army Single plane corner reflector guidance system
US3963195A (en) * 1975-01-27 1976-06-15 Northrop Corporation Roll reference system for vehicles utilizing optical beam control
US4072281A (en) * 1976-12-27 1978-02-07 The United States Of America As Represented By The Secretary Of The Army Optical attitude reference
US4219170A (en) * 1977-07-08 1980-08-26 Mcdonnell Douglas Corporation Missile roll position processor
US5039029A (en) * 1982-07-01 1991-08-13 The United States Of America As Represented By The Secretary Of The Navy Missile orientation monitor
US4874245A (en) * 1988-02-26 1989-10-17 Simmonds Precision Products, Inc. Optical shaft angular and torsional displacement and speed sensing system
DE3934363A1 (de) * 1989-10-14 1991-04-25 Rheinmetall Gmbh Vorrichtung zur erzeugung von referenzimpulsen

Also Published As

Publication number Publication date
DE69102397T2 (de) 1994-09-29
US5259567A (en) 1993-11-09
EP0485292A1 (de) 1992-05-13
FR2669108B1 (fr) 1997-01-03
FR2669108A1 (fr) 1992-05-15
DE69102397D1 (de) 1994-07-14

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